Santipapering



UNITED STATES- PATENT 'QFFICE.

JOHN LEACIL'OF ROCIIES'IER, NEVV'YO RK.

.SAN-DEFPAPERINGQMACHIN SPECIFICATION forming part of flhetters Patent No. 552,066, dated December 2431895.

' Application as December 23,-1893. Serial No- 494-562. (No model.)

To all whomit may concern.-

. 4 1 Be itknown that I, JOHN T.LEACH, of Rochester, in the county of Monroe and State of N w York, have invented certain new. and

useful improvements in Sandpapering-Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming 'a part of this specification, and to the reference-1mmorals 'marked thereon.

' l-Ieretofor'e in the manufacture of fineiwood- 'work it has beenpi'actically impossible to smooth or remove the saw-marks from some of the parts of articles of furniture, such'as chair-backs, exeeptin g by the slow and expen- "sive process of hand filling them, which not only consumes considerable time but requires the services of a'skilled operator, and it is therefore the object of my present ilrvention to, provide a machine which will sandpaper very rapidly the corners or irregular edges heretofore incapable of being sandpapered or smoothed excepting by the use of hand-tools; 5

and to these andother ends the invention consists in certain improvements in construction and combinations of parts, all as will be hereinafter fully'described, and the novel features -pointed' out in the claims-at the end of .this

specification. 1

'Inthe drawings,-Figure 1 is a side elevation' of a machine constructed inaceordance with my invention; Fig. 2, a frbnt elevation of the same; 'Fig. 3, a sectional vie .ongthe line we: of Fig.1,lookin g downward;- 1ig-.4,a sectional Iarvicw on tlieline z z of Fig. 1; Fig. 6, a see tional lview on the line a b of Fig. 2; Fig. 7 a view of a modified form of device; Fig. 8, a sectional view corresponding to Fig. (i of a modification. J

paper, (though it may be of cloth; or similar flexible material covered with sand,) passing ported upon suitable legs or brackets andhavover two p1'1lleys'2 2, t1fe latter rotated-from a suitable motor and constituting theqibets driving pulley. 3 indicates a \iforktable sup practice is desirable for some classes of workand serves to support the work, but it'i's obing an aperture through which the sandpaperbelt passes, and arranged back of they belt v where it passes through said table is a beltsupport4 composed of unyielding material, preferably iron or steel, and having its forward portion shaped inpraetically the form it is desired to have the workingportion of the belt assume, which will, of course, vary with the diiferent'articles or parts of the same article it is desired to operate upon. In the drawings I have shown this belt gu ideor block as provided with a rounded face and sharp corners at the ends thereof, which I find in as, for instance, chair'rbacks constructed as shown in Fig. 3. The belt is applied'to one of the pulleys with its abradin'g side out, and after passing over the surface of the guide or block 4 and being shaped thereby extends around the lower or driving pulley folded, one

half upon the other, as shown 'in' Fig. 5, where; by not only is the belt afforded a better grip onthe driving-pulley and prevented from slipping, but alsoit isthns made to more nearly conform to the irregular shape of the belt -'guides,. and *is strengthened and prevented-v from being accidentally torn or broken. Arranged in front of the belt support or guide/4, but below the working face thereof-, is a forward guide-block 5, preferably shaped to correspond wit-h the rear guide and projecting in close proximity thereto, sufficient space ofcourse beingallowed for the passageof the belt and du st, though the guide will resistany tendency'on the part of the belt View on the line y y of Fig. 1; Fig. 5, a simito work off the rear guide and become displaced. 111' the construction shown this frontguide is applied to the upper side of the table vious that it could be inserted in an. aperarticle to be smoothed is pressedagainst the face of the belt, which'is supported and given the proper shape by the back-guide, as above. described, and as both the back and front 100 guidesor supports are capable of being're moved and others of different shape readily ture therein, but' in either case the belt-slips r 9 that in operation the substituted various articles or different parts 5 whichl find advantageous iii-practice, the

belt being preferably creased slightly longitudinally, and after passing from said guides being turned over upon itself and passed doubled around the d living-pulley. 10' Sometimes it is des' :able to smooth articles having rounded surfaces, and in order that. this may be accomplished and at the same time to enable the operations before described to be carried out I provide above the back belt-guide 4 an additional guide 6 which may, if desired, be formed integral withthe former,

as shown inFig. 8. to assume the shape of the guides to enable the peculiar corners for which the guides are adapted to be operated upon, and will afford sufiicient room above the table to permit the manipulation of the article to bring allparts against the belt. I claim as my invention 2 5 '1." In a sand-papering machine, the combi- This will cause the belt nation withthc supporting pulleys, of the sand-belt, and a rigid back-guide therefor, said belt being folded and passed around one of its pulleys with a portion of its abrading surface in contact therewith, substantially as described.

2. In a sand-papering machine, the combination with the supporting pulleys, of the sand-belt, and the shaped front and back guides therefor, said belt being folded and passed around one of its pulleys with a pertion of its abrading. surface in contact therewith, subst-antially as described.

In a sand-papering machine, the .combination with the sand-belt and its supporting pulleys,of the rigid back and front belt guides, and the additional back guide arranged above the first mentioned one with. aspace between for the manipulation of the article operated upon, substantially as described.

JOHN 'J. L men;

. \Vitn csses \VM. A. HUBBARD, Jr.,

FRED F. CHURCH. 

